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Overview




Enduring Understandings

  • Electricity can be measured on scales of voltage, current, and power, which are related but different concepts.
  • Ohm's Law describes the relationship between voltage, current, and resistance in an electrical circuit.



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Prior Learning (from S8 Anchors)

S8.B.3.3 Explain how renewable and non-renewable resources provide for human needs or how these needs impact the environment.
  • S8.B.3.3.1 Explain how human activities may affect local, regional, and global environments.
  • S8.B.3.3.2 Explain how renewable and nonrenewable resources provide for human needs (i.e., energy, food, water, clothing, and shelter).

S8.C.2.1 Describe energy sources, transfer of energy, or conversion of energy.
  • S8.C.2.1.1 Distinguish among forms of energy (e.g., electrical, mechanical, chemical, light, sound, nuclear) and sources of energy (i.e., renewable and nonrenewable energy)
  • S8.C.2.1.2 Explain how energy is transferred from one place to another through convection, conduction, or radiation.
  • S8.C.2.1.3 Describe how one form of energy (e.g., electrical, mechanical, chemical, light, sound, nuclear) can be converted into a different form of energy.

S8.C.2.2 Compare the environmental impact of different energy sources chosen to support human endeavors.
  • S8.C.2.2.1 Describe the Sun as the major source of energy that impacts the environment.
  • S8.C.2.2.2 Compare the time span of renewability for fossil fuels and the time span of renewability for alternative fuels.
  • S8.C.2.2.3 Describe the waste (i.e., kind and quantity) derived from the use of renewable and nonrenewable resources and their potential impact on the environment.



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Learning Objectives: Working Draft

  • Calculate energy costs of electrical appliances.
  • Discuss ways to increase efficiency of electrical appliances.
  • Use Ohm’s Law to explain relative resistances, currents, and voltage.
  • Explain how electricity induces magnetism and how magnetism induces electricity as two aspects of a single electromagnetic force.



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Essential Learning Activities/Strategies/Technology: Working Draft




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Supplemental Resources

http://science.howstuffworks.com/power.htm
http://science.howstuffworks.com/electricity.htm
http://science.howstuffworks.com/wind-power.htm
http://science.howstuffworks.com/nuclear-power.htm
http://science.howstuffworks.com/solar-cell.htm
http://electronics.howstuffworks.com/question110.htm -The 3 Prongs on an Outlet Plug
Text- Science Spectrum CH 11.2-Ohms Law; Ch 11.3 Power; CH 8.4 Efficiency; Conservation of Energy
Hand-Crank Generators
Watt-meters
http://www1.eere.energy.gov/education
http://www.eia.doe.gov
Online Generator Simulations
Online Alternative Energy Simulations
Online Circuit Simulations
An Online Real-time US Power Grid Graph - http://currentenergy.lbl.gov/
A freeware circuit solving program: ".An educational electricity and electronics software for circuit analysis and resolution." from Apple.
http://www.energyquest.ca.gov/projects/index.html Ideas for science-fair activities related to energy.
http://energizedlearning.lbl.gov/EnergizedLearning.html "Energy supply, conversion and use is central the quality of life for all people. It is our hope that students, teachers and parents will develop a better understanding of energy and its complex interrelationships."
Gag Toys: Deduce the energy transformations involved these gadgets
PA Shopping Guide for Electrical Suppliers
NEED, National Energy Education Development Project, featuring lesson plans and question banks, sponsored by a variety of energy industry representative
Power Grid Applet Activity (Great applet showing generators and the distribution of electrical power) Student Packet is also linked on site
Number of CFLs in use today in PA ...nice statistics http://green.yahoo.com/18seconds/
http://www.pspb.org/e21/media/wind_story.swf
http://www.pspb.org/e21/index.php
Electricial transformation
US Residential Energy Consumption Survey 2005
UMASD Energy Dataexternal image msword.png Upper Merion Area School District Energy.docexternal image msexcel.png UMASD Utilities.xls
  • Wind Story (pspb)
  • Electrical Transformers


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Embedded Curriculum Document


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